Roller grain-mill



N M a 1. 3Shets-Slieet 1. e 0. W. TEESSELT. ROLLER GRAIN MILL.

Patented June 19, 1883 WITNESSES ATTORNEYS.

N PETERS Halo-Lithographer. Wahmgton. D. C.

(No Model.) 3 Sheets-Sheet 2.

' 0. W. TRBSSELT. ROLLER GRAINMILL.

No. 279,673. Patented June 19,1883.

WITNESSES 1 INVENTQR:

0 W JWM ATTORNEYS.

N. PrrERs Photo-Lithographer. c.

(No Model.) 3 Sheets-Sheet 3.

' O. W. TRESSELT.

ROLLER GRAIN MILL.

Patented June 19,1883.

INVI ayTO 0 BY TTORNEYS WITNESSES %MM%% her. wash UNITED STATES PATENT O ICE.

OSCAR w. TRESSELT, or FORT AYNE, INDIANA.

ROLLER GRAIN-MILL.

SPECIFICATION forming part of Letters Patent No. 279,673, dated June 19,1883.

Application filed February 17. 1883. (N model.)

To aZZ whom it may concern.-

Be it known that I, OSCAR W. TRESSELT, of Fort Vayne, in the State of Indiana, have in vented Improvements in Roller GraiirMills, of which the following is a specification.

The invention will first be described in connection withall that is necessary to a full nuderstandiug thereof, and then. poipted out in the claims.

Figure l of the drawings is a side and Fig.

2 a sectional elevation of the roller-milh'the latter on line 00 x of the former.

. in length and the rollers (tto be adjusted. The

oheclenuts lc' serve to hold the screws to the shackles. These devices enable the rollers a. to be adjusted with respect to rollers 11.

In order to shift the shaft e so as to grind a. finer or coarser article, the shifting-lever Z is employed. This carries a bolt, m, which may be shifted along a dovetail groove, 0, of a semicircle, 1), its head being in the groove and adapted to be locked by a nut 11.

q is an offset in the bed-frame, by which the bearings of shaft e may be set inwardly from bed 0, so that boxes I) may be in line with eccentrics g. The shaft 6 extends from side to side of the machine, so that the rollers a may be adjusted from end to end alike bymanipulating the lever l. Springs t exert a yielding pressure upon the bearings s, so that the rolls '(Z will separate sufficiently to allow matters too hard to be crushed to pass through them. The bearings will be held up to the stop-shoulders u on bed-plates 0 until the obstruction becomes too great for the springs to resist.

10 are adjusting-screws to regulate the tension of the springs, and x a rib on the bearof the rollers, as shown at h.

ings s, to form a rest for the springs without upward or downward thrust. The springs t are bibranched and extend up on each'side of the bed-plates (I. r

.The frame is cast with housings (1, project ing down from the under side of the cross-bars y, with bosses f for the nuts of the adjustingscrewsg, by which the belts may be tightened. The bed-plates c are also planed fiat on top, and beveled underneath for the roller-journal bearings, which are also planed correspond ingly. I also make oil-boxes in the bearings These devices are not in themselves new, but are described in the interest of a full understanding of the general operation of the machine.

The bearings b s are divided, applied to the bed-plates, and bolted together, and the j ournals '6 preferably provided with two spoonshaped agitators, 7r, (see Fig. 4,) revolving with the journals, for throwing the oil against the top of the chamber, so that it will run down on both sides for continuously lubricating said journals. These devices are also in themselves old, and form no part of the present invention.

Having thus described all that is necessary to the understanding of my invention, what I claim as new is- 1. The combination, with the roll er-bearings I), of the screw-rods h i, the intermediate swivels, j, the check-nuts k, and the shaft e,'-the latter provided with eccentrics g g and handlever Z, as shown and described.

2. The bearings s and rollers (I, in combination with the springs I, bed-plates 0, having shoulders u, and adjusting-screws w, as and for the'pu'rpose specified.

3. The combination, with the shaft 0, ecce trics g g, screw-rods M, swivel j, and the bearings I) of rollers 11, of the shifting-lever Z, the bolt m, and the semicircle 2, provided with a dovetail groove, 0, in which said bolts head slides, as described.

OSCAR VVILLTAM TRESSELT.

Witnesses:

ROBERT GAVIN, HERMANN GELLING. 

